Hoist swivel shackle assembly
First Claim
1. A swivel shackle assembly for lifting heavy loads, comprising:
- a swivel body member rotatable about a swivel axis on a base, a generally "U" shaped shackle member having leg portions and inwardly projecting pin portions received in spaced aligned bores in the swivel body rotatable about an axis perpendicular to the swivel axis, and means separate from the pin portions to reduce outward distortion movement of the leg portions including interengaging means on the swivel body member and shackle member adjacent the shackle member leg portions for limiting movement of the shackle member leg portions outwardly away from the swivel body, said "U" shaped shackle member leg portions being parallel to each other and interconnected by a bight portion, said leg portions having ends from which the pin portions project inwardly, said interengaging means including a flange defined about the pin portion axis on one of the swivel body member and the "U" shaped shackle member leg portions, and a recess receiving flange formed on the other member, said flange and recess extending perpendicular to the axes of the spaced aligned bores in the swivel body.
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Accused Products
Abstract
A hoist swivel shackle assembly used with others to hoist heavy objects such as dies and molds. The shackle includes a "U" shaped shackle member pivotal on a swivel body which is rotatable about an orthogonal axis on a base. Long term distortion of the shackle member is minimized by flanges on the ends of the legs of the shackle that slidably engage side bosses on the swivel body to absorb outward loading on the shackle. The shackle is pivoted to the swivel body member by a pair of pins with annular recesses, fixed in a pair diametrally opposite pin receiving bores in the swivel body member. These pins are held in the swivel body member by pressing a softened material into threaded bosses in the swivel body forcing it around the pins and into their recesses. Overloading the swivel shackle assemblies is minimized by an indicator that tells the operator when he has exceeded the safety angle of the shackle member.
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Citations
13 Claims
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1. A swivel shackle assembly for lifting heavy loads, comprising:
- a swivel body member rotatable about a swivel axis on a base, a generally "U" shaped shackle member having leg portions and inwardly projecting pin portions received in spaced aligned bores in the swivel body rotatable about an axis perpendicular to the swivel axis, and means separate from the pin portions to reduce outward distortion movement of the leg portions including interengaging means on the swivel body member and shackle member adjacent the shackle member leg portions for limiting movement of the shackle member leg portions outwardly away from the swivel body, said "U" shaped shackle member leg portions being parallel to each other and interconnected by a bight portion, said leg portions having ends from which the pin portions project inwardly, said interengaging means including a flange defined about the pin portion axis on one of the swivel body member and the "U" shaped shackle member leg portions, and a recess receiving flange formed on the other member, said flange and recess extending perpendicular to the axes of the spaced aligned bores in the swivel body.
- View Dependent Claims (8, 9, 10)
- 2. A method of manufacturing a swivel shackle assembly of the type having a body member rotatable about a swivel axis on a base, a generally "U" shaped shackle member having leg portions and inwardly projecting pin portions received in spaced aligned pin receiving bores in the swivel body rotatable about an axis perpendicular to the swivel axis, including forming the swivel body with a pair of bores intersecting the pin receiving bores in the swivel body, inserting the shackle pin portions into the swivel body pin receiving bores, and pressing a softened material into the intersecting bores causing the material to flow around the pin portions preventing outward movement of the pin portions in the swivel body pin receiving bores.
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5. A swivel shackle assembly for lifting heavy loads, comprising:
- a swivel body member rotatable about a swivel axis on a base, a generally "U" shaped shackle member having leg portions and inwardly projecting pin portions received in spaced aligned bores in the swivel body rotatable about an axis perpendicular to the swivel axis, and means to axially lock the pin portions in the receiving bores in the swivel body including a pair of bores in the swivel body intersecting the pin portion receiving bores, and a high strength pressed material in the intersecting bores having portions flowed around the pin portions to axially lock the pin portions.
- View Dependent Claims (6, 7, 11)
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13. A method of manufacturing and disassembling a swivel shackle assembly of the type having a body member rotatable about a swivel axis on a base, a generally "U" shaped shackle member having leg portions and inwardly projecting pin portions received in spaced aligned bores in the swivel body rotatable about an axis perpendicular to the swivel axis, including forming the swivel body with a pair of bores intersecting the pin receiving bores in the swivel body, inserting the shackle pin portions into the swivel body receiving bores, pressing a material into the intersecting bores causing the material to flow around the pin portions preventing outward movement of the pin portions in the swivel body pin portion receiving bores, the step of pressing the material into the intersecting bores includes heating a high strength thermoplastic material and injecting the material into the intersecting bores, and disassembling the swivel shackle assembly including the step of heating the thermoplastic material and removing substantial portions thereof from the intersecting bores.
Specification